The Tokai University Juridical Foundation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5232433 Hyperthermia deviceExpiredJun 19, 91Aug 03, 93[A61N]
5223721 Diamond n-type semiconductor diamond p-n junction diodeExpiredFeb 07, 92Jun 29, 93[H01L]
5200389 Method for manufacturing an oxide superconducting articleExpiredOct 25, 91Apr 06, 93[B05D]
5112775 Method of making diamond N-type semiconductor diamond p-n junction diode using diphosphorus pentoxide and hot filament CVD methodExpiredNov 07, 90May 12, 92[H01L]

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